Metal punching machine



R. SHAW.

METAL PuNcmNG MACHINE.

APPLICATION FILED DEC. 5. I9! fl 1 ,303603 Patented May 13, 1919.'l

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METAL PuNcHxNG MACHINE. APPLICATION FILED DEC.5| 191?.

1,803,603;- 4Patented May 13, 1919.

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R. SHAW. Mam PUNQHING MACHINE.

APPLICATION FILED DEC. 5.19II.

,Patented May 13, 1919.

@SHEETS-SHEET 3- giu UNITED sTATEs PATENT oEEioE.

RICHARD SHAW, 0F MANCHESTER, ENGLAND, ASSIGNOR T0 DE BERGUE & COMPANY LIMITED, OF MANCHESTER, ENGLAND.

METAL-Primetime MACHINE.

Lsoaeoa.

Specification of Letters Patent.

Patented May 13, 1919.

Application filed December 5, 1917. Serial No. 205,598.

upon a vertically reciprocating punch head or beam and the dies on a fined bed, twol clarriages or work holders with a traversing movement both longitudinally and transl versely of the bed of the machine carry the work and a templet or guide is tted to the side of the machine to enable a row of holes to be punched in the work parallel' with its edge or according to a predetermined line or curve.

The invention is primarily designed for punching holes in ships plates but may be` applied to other long plates, sheets or strip of metal. l

The invention consists essentially in connecting the two carriages or work holders by such mechanism or gearing as will give them a simultaneous transverse traverse to maintain contact of the edge of the work or a templet and a guide roller. i

The invention will be fully described with reference to the accompanying drawings in which it is shown applied to a plate punching machine andin which suiicient of `the machine is shown in outline to illustrate the invention.

Figure 1. is an elevation in outline of punching machine designed for `punching rows of holes in a plate' parallel with the edge, (partly in section).

Fig. 2. is an outline plan of same. Fig. 3. is an end elevation in outline. Fig. 4. is an elevation in outline of punchin machine designed for punching rows of ho es in a plate according to a predetermined curve, (partly in section).

Fig. 5. is an outline plan of same.

Fig. 6. is an end elevation in outline. n

Fig. 7 is a top plan view of one extremity of the machine on an enlarged scale, particularly showing the one-work holding carriage and mechanism for operating the same.

Fi 8 is a transverse vertical section on the llne 8-8 of Fig. 7.

The longitudinal bed A, the vertically reciprocating punch head B, the punches b,

the die bed C, dies c, and the mechanism for operating the punch head are all of ordinary well known construction and the details are omitted from the drawings. The work carriages D, D are also constructed, mounted and traversed longitudinally of the machine" in the ordinary way and by the ordinary mechanism which is also omitted from the drawings as its construction-iswell known and forms no part of our invention.

According to our invention however, we connect the two work carriages by suoli mechanism as will cause `their transverse traverse to be simultaneous.

The work carriage Dis constructed in two parts d al the part CZ traversing the longitudinal bed'A and the part d to which the work is directly ailxed or clamped traverses the part fl transversely and the work carriage D at the other end of the machine is similarly constructed the part d2 traversing the bed A and the part d3 to which the work is aiiXed or clamped traverses the` part d2 transversely.

The transverse traversing parts al and d3 of the work holders or carriages D D are each fitted with a rack E and thelongitudi-l nally traversing parts d Z2 of the carriages each with a pinion e gearing` with therack, the pinion operates the rack to move the carriage transversely in oneV direction and is rotated -y by the movement of thecarriage when it is moved or forced back in the reverse direction. To the rack pinion e a driving pinion e is attached or connected so that the two pinions rotate together.

Each pinion e gears with a pinion f on a shaft Fcarried in suitable bearings and extending longitudinally oi' the machine, the pinions f being provided with keys traversing a slot in the shaft so as to rotate with thel shaft.

` On the shaft F a drum G is fitted with a band or chain g wound thereon from which a weight W is suspended. The weight W as it uncoils the band or chain g from the drum `ed together by gears and screws of coarse pitch carried by one part ofthe carriage, and a nut of corresponding pitch carried on thetransversely moving part of the carriage in place ofthe rack.

The traverse movement of the carriages and work may be controlled or directed by the `edge of the plate or `work P bearing against' a guide roller or runner H mounted on the die bed C of the machine, as in Figs. l to 3, or the traverse movement of the carriages and work may be controlled by a guide roller or runner K mounted upon the traversing member d of one of the carriages D bearing a ainst a templet M carried by brackets m aixed to the longitudinal bed A. The templet barMmay be straight or curved and may be set parallel to the edge of the plate or work P or at any inclination thereto als in Figs. 4 to l6. The longitudinal movementof the Work carriage D is obtained by the use of a screw K working in a nut along the side ofthe carriage, as clearly shown by Fig. 7. vThe screw K is driven from one moving part of the machine by bevel gears it', as shown particularly in Fig. 7, shaft H and gears h.

In operation the rotation of the shaft by the action of the weight W or a spring simultaneously traverses the two carriages and the work thereon toward one side of the machine and maintains the edge of the work P constantly against a guide roller H as in Figs. l to 3, or the guide roller K constantly against the templet bar M as in Figs. 4 to 6 thereby punching a row of holes parallel with the edge of the plate P or parallel with the templ'et bar M the latter being set tol anyv predetermined line or curve.

WhatI claim as my invention and desire to protect by Letters Patent is In a punching machine the combination with a longitudinal bed, a punch head carrying punches, a die bed: with punch dies, and two separated work holder carriages, of meansfor shifting the carriages transversely in straight lines and means for connecting the carriages to cause them to move unitedly and simultaneously to and fro in a 'transverse direction substantially as described.

CQpescf, thisvpatent, may4 be obtained for iyre cents each, by addressing the 2. In a punching machine the combination with the longitudinal bed, the punch head carrying punches, the die bed with punch dies, and two work holder carriages with longitudinal and transverse movements of a rack aiiiXed to each transverse part of the carriage, pinions meshing with the racks, a longitudinal shaft extending the length of the machine, means for rotating the shaft and means for transmitting the motion thereof to the rack pinions and vice versa from the rack to the shaft substantially as described.

3. In a punching machine the combination with the longitudinal bed, the punch head carrying punches, the die bed with punch dies, and two -work holder carriages with longitudinal and transverse movements of a rack afiXed to each transverse part of the carriage, pinions meshing with the racks, a longitudinal shaft extending the length of the machine, a drum on the shaft, a band wound upon the drum, a weight suspended from the drum to rotate the shaft, a pinion through which the shaft passes and which slides over the shaft and gears to transmit the motion of the shaft to the rack and carriage substantially as described.

4. A metal punching machine constructed with two work carrying carriages each formed of two parts one part traversing longitudinally and the other part traversing transversely, a rack atiiXed to each of the transverse traversing parts of the carriages, pinions meshing with and to operate the racks, a single longitudinal shaft to connect the two carriages, a weight and band to rotate the shaft, and gears to connect the shaft with the rack pinions to give a simultaneous transverse movement to thev two carriages substantially as described.

In testimony whereof I havefhereuntoA set my hand in presence of two subscribing witnesses, this 31st day of October, 1917.

RICHARD SHAW.

Witnesses: J .-OWDEN OBRIEN,

GEO. H. OBRIEN.

Commissioner of latente,

Washington, D. G. 

